Organic cupric cyanogen compounds



Patented Oct. 4, 1932 vita. stares r:

FRIEDRICH WILI-IELM S'IA'UIE, OF COLOGNE-DEUTZ, AND HERIIIANN H'AGENEST, 0F

WIESDORF-ON-TI-IE-REINE, GERMANY, ASSIGNORS 'IO WINTHROP CHEMICAL COM- PANY, INCL, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK ORGANIC CUPRIG CYANOG-EN COMPOUNDS No Drawing. Application filed September 10, 1929, $eria1 No. 391,695, and. in Germany October 31, 1928.

The present invention relates to cupric dine-cupric-cyanide of the probable formula:

cyanogen compounds.

The new products of the probable formula:

ononpn wherein A designates a basic reacting nitrogen containing organic compound are manufactured by treating a mixture of a watersoluble cyanide and of about the equivalent quantity of a basic reacting, nitrogen containing, organic compound with the equivalent quantity of an aqueous solution of a oupric salt at a low temperature, say between about O20 C. As water-soluble oyanides we prefer to use potassiumand sodium cyanide and as cuprio salt, cupric sulfate. As organic, nitrogen compounds contalning groups of a basic character we use for instance, methylamine, ethylenediamine, urea, guanidine, aniline, pyridine, piperidine and the like.

Thus are produced water-insoluble compounds of divalent copper with hydrocyanic acid and an organic basic nitrogen compound.

After filtration and drying, stable compounds of green and blue color are obtained, which in consequence of their copper content, their high cyanogen content and the kind of the or anic group, as also on account of their marked dusting properties are suitable materials for combating insect pests.

The invention is illustrated by the following examples, without being limited thereto:

Example 1 :25 parts by weight of copper sulfate are dissolved in 100 parts by'weight of Water. This solution is added to an ice cold aqueous solution of 13 parts by weight of potassium cyanide and 6 parts by weight of urea in 25 parts by weight of water. A dark green colored monourea cupric cyanide of the probable formula:

Cu(CN) .NH CONH is precipitated.

Example 2 :-25 parts by weight of copper sulfate are dissolved in 100 parts by weight of water. This solution is added to an ice cold aqueous solution of 13 parts by weight of potassium cyanide and 9 parts by weight of pyridine in 25 parts by weight of water. A green colored compound of mono-pyri- 011(CN) .C H N is produced.

We claim: 1. The complex compounds of the probable formula Cu UN) A wherein A. designates an organic, basic reacting, nitrogen containing compound, being in the dry state blue to green colored waterinsoluble powders, and being suitable dusting materials for combating insect pests.

2. The complex compound of the formula:

Cu (ON) .G H N being in the dry state a green colored waterinsoluble powder, and being a suitable mate-v rial for combating insect pests.

3. The complex compound of the formula:

Cu GN) NH .GO.NH

lUU 

